cannot start jstatd due to permission error

Question

I try to run jstatd jvm monitoring tool on linux machine

jboss@hostAddr:/usr/java/jdk1.6.0_18/bin> uname -a
Linux hostAddr 2.6.16.60-0.34-smp #1 SMP Fri J         


        

Answer 1

A one liner using process substitution (though bashism):

jstatd -p 1099 -J-Djava.security.policy=<(echo 'grant codebase "file:${java.home}/../lib/tools.jar" {permission java.security.AllPermission;};')

Wrapped:

jstatd -p 1099 -J-Djava.security.policy=<(echo 'grant codebase "file:${java.home}/../lib/tools.jar" {permission java.security.AllPermission;};')

As of jdk1.8.0_92, the java launcher option prefix -J is still required.

Note:

The original problem is more likely due to the tilde ~, in ~/jstatd.all.policy, isn't expanded hence not understood by java, meanwhile either absolute path or using ${HOME} instead should work.